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2024-02-13
Varactor Loaded Phase Shifter with Frequency-Adaptive Control Circuit
By
Progress In Electromagnetics Research Letters, Vol. 117, 97-101, 2024
Abstract
This paper introduces a novel RF phase shifter design that operates at constant phase shift over operation frequency range. The proposed phase shifter utilizes the conventional reflective-type phase shifter which is inherently frequency-dependent. The introduced reflective-type phase shifter design is integrated with an adaptive control circuit that varies the required DC voltage as a function of the frequency. Thus, the phase shift will be relatively constant throughout the frequency of operation compared to the conventional frequency-dependent reflective-type phase shifter. The phase shifter is designed to operate at 90˚ and is shown to maintain that phase shift with around 15˚ compared to the conventional design where the phase shift varies by more than 60˚ at the same bandwidth. The proposed design, including the adaptive controlled circuit, is fabricated, and the measured data agree with simulations.
Citation
Waleed Alomar, Abdullah Alburadi, Meshaal Alyahya, and Hussein Shaman, "Varactor Loaded Phase Shifter with Frequency-Adaptive Control Circuit," Progress In Electromagnetics Research Letters, Vol. 117, 97-101, 2024.
doi:10.2528/PIERL23120804
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